نتایج جستجو برای: benzaldehyde derivatives
تعداد نتایج: 106723 فیلتر نتایج به سال:
The effect of benzaldehyde, 2-hydroxybenzoyl hydrazone derivatives on the corrosion of aluminium in hydrochloric acid has been investigated using thermometric and polarization techniques. The inhibitive efficiency ranking of these compounds from both techniques was found to be: 2>3>1>4. The inhibitors acted as mixed-type inhibitors but the cathode is more polarized. The relative inhibitive effi...
Tungstophosphoric acid (H3PW12O40) supported on silica-coated magnetite nanoparticles has been prepared and used as a heterogeneous catalyst (Fe3O4@SiO2@HPW) in the condensation of benzaldehyde (B) with glycerol (Gly) for production cyclic acetals. Physicochemical techniques, including scanning electron microscopy (SEM), transmission (TEM), Fourier-transform infrared spectrometry (FTIR), X-ray ...
Abstract Quinazolinone synthesis usually requires employing sensitive substrates, hazardous solvents, large excess oxidants, and expensive catalysts. In this study, an efficient environmentally benign pathway was developed to synthesize 2-phenylquinazolin-4(3 H )-one via oxidative coupling between commercially available stable chemicals, including 2-aminobenzamide benzyl alcohol without toxic o...
An< accurate, stable and very fast corner finder (for feature based vision) has been developed', based on a novel definition of corners, using:no image derivatives. This note describes the algorithm and the results obtained from its use.
Using intact cells of Chlorella pyrenoidosa it is possible to obtain oxygen by the reduction of certain reducible materials other than carbon dioxide. Of these, benzaldehyde was studied in some detail. This reduction does not involve the production of carbon dioxide from the benzaldehyde. Stoichiometrical relationships as expressed by the following equation: 2C(6)H(5)CHO + 2H(2)O --> 2C(6)H(5)C...
Catalysts are frequently used as pelletized powdered materials, but rarely thin films. The present work reports the use of 2D h-boron nitride on few layers defective graphene (h-BN/fl-G) films about 10 nm thickness base catalyst for synthesis benzoxazoles by coupling a 2-amino-phenol with p-substituted benzaldehydes. benzoxazole derivatives has aroused much interest in last decades due to their...
A sustainable approach for the synthesis of substituted quinazolines by sequential acceptorless dehydrogenative coupling 2-aminobenzyl alcohol with alcohols using new Pd(II)-NNO pincer-type complexes as catalysts was reported. Air-stable palladium(II) general formula [Pd(L)(PPh3)] (where L = 4-substituted methyl-2-pyrrolyl benzhydrazone ligands) were synthesized, and their compositions recogniz...
Biosensors for the detection of benzaldehyde and γ-aminobutyric acid (GABA) are reported using aldehyde oxidoreductase PaoABC from Escherichia coli immobilized in a polymer containing bound low potential osmium redox complexes. The electrically connected enzyme already electrooxidizes benzaldehyde at potentials below -0.15 V (vs. Ag|AgCl, 1 M KCl). The pH-dependence of benzaldehyde oxidation ca...
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